approximability

英

美

网络可近似性; 可逼近性

The vibration signal caused by diesel engine's combustion is pretreated by using the approximability characteristic of wavelets transformation, which has restrained the high frequency interference and improved the integrated diagnostic precision of combustion condition.
利用小波变换中的近似特性，对柴油机的燃烧振动信号进行了光滑预处理，抑制了高频信号的干扰，有效地提高了柴油机各缸燃烧工况的综合诊断精度。
Results concerning the existence, uniqueness, approximability of the minimum-norm control of the transpiration ablation system are presented by using operator semigroup theory and the method of geometry in Hilbert Space.
通过应用算子半群理论和Hilbert空间的几何方法，得到了系统的最小范数控制的存在性、唯一性和可逼近性的结果。
E. the minimum energy control for distributed parameter systems is investigated in present paper. The existence, the uniqueness and the approximability of the minimum energy control for distributed parameter systems are proved by means of semigroup of operators and geometry of Banach space.
讨论了分布参数系统的一类最优控制，即最小能量控制问题，利用算子半群理论和Banach空间的几何方法来证明分布参数系统的最小能量控制的存在性、唯一性和可逼近性。
The Approximability of NP Optimization Problems
NP最优化问题的可近似性